Valve-operating mechanism for hydrocarbon-engines.



. PATENTED JUNE 23, 1908. E. HUFP. VALVE OPERATING MECHANISM EOEHYDROGARBON ENGINES.

.3 J. 4 1 w 8 e m. 2 00 muwn 0 1 @v 0 E 4 mmu ns iliihruzvr/l/g 7 mu N oY f UNITED STA ES PATENT OFFICE.

RUSSELL HUFF, or DETROIT, MICHIGAN, ASSIGNOR'TO PACKARD MOTOR GARCOMPANY,

OF DETROIT, MICHIGAN A CORPORATION OF WEST VIRGINIA.

VALVE-OPERATING MECHANISM FOR nYDnocAnBon-ENGmEs.

Specification of Letters Patent. Patented rune 23, 1908.

Application flled October 1, 1907. Serial No. 395,878.

To all whom it may concern:

Be it known that I, RUSSELL HUFF, a citizen.of the United States, andresident of useful Improvements in' Valve '-Operating to the dust guardwhich covers t I of an explosive engine and 2 the valve which 1 to itsseat at its Mechanism for -Hydrocarbon Engines, of which the followingis a specification. j

This invention relates to valve operating mechanism for hydrocarbonexplosive en 'merely t gines used on motor vehiclesand articularly liejoint .be-

tween the sliding valve operating rod and the tubular support for. it. 1

In the accompanying drawings, Figure 1 is a .view artly in sectionshowing the portion of a hydrocarbon engine having my improvementthereon; Fi

mcluding my present improvement.

In this drawmg, 1 represents the cylinder regulates the passage of thegases throu h the opening)3. This valve is normally he d y a spring 4bearing against the casing and a ainst the washer secured to the valvero 13. Directly below the lower end of the valve rod 13 and in linetherewith is mounted the tubular guide 9. The tubu. lar roller holderorsliding member 8 fits closely the interior of the guide 9 and carriesower end the roller 7, which is operated by the cam 5 on the shaft 6.This tubular sliding member is provided with screw threads on itsinterior at the upper end which receive the screw 11 which is-providedat its top with the head 12 which makes contact with the lower end ofthe valve rod 13. A lock nut 18 is placed upon the screw 11 and isadapted to be screwed down tight against the end of the sliding member 8andby this means the screw 11 may be adjusted to various heights andlocked in any desired osition. The upper portion of the nut 18 1sprovided with angular faces so that it may be turned by means of awrench and is provided midway its length 'with an annular groove 19. Thepart of the nut below this groove marked 20 is -made cylindrical inform.

Surrounding the upper endof the guide 9 and making close sliding contacttherewith is the tubular dust guard 17 which has its upper end bentinward against the cylindrical portion of the nut and into the groove inthe nut.

2 is a sectional view'of a ortion of the va ve operatlng mechamsm.

This dust guard is preferably made of sheet metaland its upper ortion isspun into the groove and against t e cylindrical portion of the nut,thus making a firm and solid connection between the nut and the dustguard. It will be understood that other means for permanently securing:the guard to the sides of'the nut maybe adopted without departing frommy invention inlts broader aspects and that the articular means abovedescribed is lie one which I prefer" and which I regard as havingadvantages over other means.

Before making the present invention I rovided the dust guard with aninturned angefitting between the nut 18 and the uper end of the slidingmember 8 and clamped 1t firmly in place between these parts. It

was found however that the constant adjustment of. the mechanismwould-soon wear away the flange andthe dust guard would be useless andit was in seeking to overcome this difficulty that I conceived theconstruction in which the guard is fastened to the nut permanently aboveits bottom where it will not be subjected to the wear due, toadjustment.

I have shown in the drawing aspring 14 within the guide 9 bearingagainst the under surface of the dust guard 17 which spring tends tokeep the head 12 of the screw 11 in contact with the valverod, but it isto be understood that this spring is not essential and forms no part ofmy present invention.

My invention relates primarily to the dust guard and-means forsupporting it in its relation to the joint between the two sliding partsand it is to be understood that the specific forms of the various partsof the mechanism shown are not essential to the present invention.

Having described my invention what I claim and desire to secure byLetters Patent 1s 1. A dust guard for slidingv connections consisting ofa nut and a tubular metal portion of greater diameter having one endbent inward and permanently secured to the sides of the nut between 1tsends.-

2. A dust guard for sliding connections consisting of a nut providedwith a circumferential groove and a tubular metal portion of greaterdiameter having its end spun into said groove.

3. A dust guard for sliding connections circumferential groove of theconsisting of a screw threaded nut having on its outer surface acircumferential groove the surface of said nut on one side of saidgroove being angular and upon the other cylindrical, in combination witha cylindrical metal portion having a diameter greater than the nut andhaving its end spun down in close contact with the cylindrical portionof the nut and into the groove therein.

4. The combination with a tubular guiding member, of a sliding membermounted therein, an adjustable nut carried by the sliding member beyondthe end of the guiding member and being provided with a circumferentialgroove, and a dust cap closely fitting and slidably engaging the end ofthe guiding member and having its ends spun into the nut.

5. In valve operating mechanism for hydrocarbon engines, the combinationwith the operating rod of the tubular guiding member through which itslides, an adjustable screw threaded nut mounted on said rod beyond theend of said guiding member and provided ed with a circumferential grooveand a tubular dust guard fitting over the end and for some distance downthe sides of the guiding member, the end of said dust guard being spuninto the groove in the nut.

6. In valve operating mechanism for hydrocarbon engines, the combinationwith the tubular supporting operating member, of an adjustable screwthreaded rod engaging screw threads within the end of said member, alock nut on said rod adapted to be screwed down against the end of saidsupporting member, a tubular guiding member through which the supportingmember slides, and a tubular dust guard fitting over the end of theguiding member and permanently secured to the sides of the nut.

In testimony whereof I aflix my signature in presence of two Witnesses.

RUSSELL H'U FF.

Witnesses MILTON TIBBETTS, CLARA DALE.

